docs: def build_url(server_context, controller, action, container_path=None):
      # type: (ServerContext, str, str, str) -> str
      """
      Builds a URL from a controller and an action. Users the server context to determine domain,
      context path, container, etc.
      :param server_context: A LabKey server context. See utils.create_server_context.
      :param controller: The controller to use in building the URL
      :param action: The action to use in building the URL
      :param container_path:
      :return:
      """
      return server_context.build_url(controller, action, container_path=container_path)